Data / Rankings / Population aged 65 and over / Counties in Connecticut

Counties in Connecticut by share of population aged 65 and over

Northwest Hills Planning Region had the highest share of population aged 65 and over of 9 counties in 2023, at 25.5%. Greater Bridgeport Planning Region had the lowest, at 16.4%. The median was 20.2% and the figure for Connecticut was 19.4%. Source: the U.S. Census Bureau.

Highest25.5Northwest Hills Planning Region
Lowest16.4Greater Bridgeport Planning Region
Median20.29 counties
Connecticut19.4History

All counties, 2023

CSVChart (SVG)

Northwest Hills Planning RegionNorthwest Hills Planning Region: 25.5 %25.5Lower Connecticut River Valley Pl…Lower Connecticut River Valley Planning Region: 24.2 %24.2Northeastern Connecticut Planning…Northeastern Connecticut Planning Region: 20.4 %20.4Southeastern Connecticut Planning…Southeastern Connecticut Planning Region: 20.4 %20.4Naugatuck Valley Planning RegionNaugatuck Valley Planning Region: 20.2 %20.2South Central Connecticut Plannin…South Central Connecticut Planning Region: 19.6 %19.6Capitol Planning RegionCapitol Planning Region: 19.2 %19.2Western Connecticut Planning Regi…Western Connecticut Planning Region: 17.5 %17.5Greater Bridgeport Planning RegionGreater Bridgeport Planning Region: 16.4 %16.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1Northwest Hills Planning Region25.5+0.9 pts
2Lower Connecticut River Valley Planning Region24.2+0.9 pts
3Northeastern Connecticut Planning Region20.4+0.7 pts
4Southeastern Connecticut Planning Region20.4+0.6 pts
5Naugatuck Valley Planning Region20.2+0.5 pts
6South Central Connecticut Planning Region19.6+0.5 pts
7Capitol Planning Region19.2+0.4 pts
8Western Connecticut Planning Region17.5+0.5 pts
9Greater Bridgeport Planning Region16.4+0.3 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Connecticut by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"Connecticut","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Connecticut&limit=10

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Questions

Which county has the highest share of population aged 65 and over?

Northwest Hills Planning Region, with 25.5% in 2023, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Greater Bridgeport Planning Region, with 16.4% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in Connecticut: more rankings